KR20050088387A - Cooling structure for plasma lighting system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure of a plasma lighting apparatus using microwaves, and includes at least two discharge ports for introducing external air into the case to cool the heating parts in the case, and the discharge holes have different discharge flow rates. By including a fan housing, it is possible to effectively intensively cool high heat generating parts such as magnetrons, thereby providing the effect of extending the life of the parts and improving the performance of the system.

Description

Cooling structure of plasma lighting device {COOLING STRUCTURE FOR PLASMA LIGHTING SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure of a plasma lighting apparatus using microwaves, and more particularly to a cooling structure of a plasma lighting apparatus that can easily cool an internal heating component.

In general, a plasma lighting device is a device that obtains visible light or ultraviolet light by applying microwaves to an electrodeless light bulb, and has a longer lamp life and excellent lighting effect than conventional incandescent or fluorescent lamps.

1 is a longitudinal cross-sectional view showing a typical plasma lighting apparatus.

The conventional plasma lighting apparatus includes a case 1, a magnetron 3 disposed inside the case 1 and outputting microwaves, and a micro device installed in the case 1 and output from the magnetron 3; A waveguide (5) for transmitting a wave, an inert gas (G) enclosed therein, a light bulb (7) arranged to protrude in front of the case (1), and generating light, and a waveguide (5) A mesh screen (9) that is fixed to the outlet side to block microwaves and allows light to pass through, and is fixed to the front surface of the case around the mesh screen (9) and generated in the bulb (7) A reflecting mirror 11 for reflecting light forward is provided.

A high voltage generator 13 is disposed on one side of the case 1 to provide high voltage power to the magnetron 3.

The waveguide 5 has a shaft hole 5a formed at the center thereof, and a rotational shaft 10 capable of rotating the bulb 7 passes through the shaft hole 5a. In addition, a bulb motor 8 coupled to the rotating shaft 10 is installed at the rear of the waveguide 5 so as to cool the bulb 7 while rotating it.

In particular, a blowing unit 14 is installed in the rear portion of the case 1 to cool the magnetron 3, the high voltage generator 13, the bulb motor 8, and the like. The blower device 14 includes a fan housing 15 that serves as a passage through which external air flows into the case, a fan 16 provided inside the fan housing 15, and the fan 16. It consists of a fan motor 17 for driving the rotation.

When the driving signal is input to the high voltage generator 13, the plasma writing device configured as described above boosts the AC power from the outside and supplies the boosted high voltage to the magnetron 3.

The magnetron 3 generates a microwave having a very high frequency while oscillating by the high pressure supplied from the high pressure generator 13, and the generated microwave is introduced into the mesh screen 9 through the waveguide 5. While radiating, the encapsulated material in the bulb 7 is discharged to generate light having a unique emission spectrum.

In this way, the light generated from the bulb 7 is reflected forward through the reflector 11 to illuminate the illumination space.

On the other hand, when the plasma lighting apparatus is operated as described above, the fan motor 17 is also driven together, wherein the air outside the case 1 is fan housing by the operation of the fan 16 driven by the fan motor 17. After cooling the magnetron 3, the high voltage generator 13, etc. through the suction port 15a and the two discharge ports 15b and 15b '(discharge ports) of 15, the front surface of the case 1 It is discharged to the outside through the outlet port (1a) formed.

However, the above-described plasma lighting apparatus of the related art generates two heat outlets 15b and 15b 'provided in the fan housing 15 so as to have the same discharge area, and thus generates relatively high heat compared to other portions. There is a problem that the magnetron 3 and the like cannot be cooled more effectively.

Therefore, if the high heat generating parts such as the magnetron 3 are not sufficiently cooled, the endurance life may be shortened or the performance may be significantly decreased. In order to solve this problem, a fan and a fan may be used to sufficiently cool the high heat generating parts. The problem arises in that the overall capacity of the motor must be designed larger.

In addition, the above-described plasma lighting apparatus of the related art is configured to suck external air to the rear of the case 1 and discharge it to the front of the case 1, so that hot air that cools various components is discharged to the illumination space. There is a problem that can create a discomfort to the user, a problem that requires a separate discharge duct is required to discharge from the front of the case (1) to the other to solve this problem.

1 is a longitudinal sectional view showing a plasma lighting apparatus of the prior art;

2 is a longitudinal sectional view showing a cooling structure of the plasma lighting apparatus according to the first embodiment of the present invention;

3 is a longitudinal sectional view showing a cooling structure of a plasma lighting apparatus according to a second embodiment of the present invention;

4 is a cross-sectional view of the case in the direction of line A-A of FIG.

5 is a longitudinal sectional view showing a cooling structure of a plasma lighting apparatus according to a third embodiment of the present invention;

6 is a cross-sectional view of the case in the direction of line B-B of FIG. 5;

7 is a cross-sectional view of a case according to a fourth embodiment of the present invention;

8 is a longitudinal sectional view showing a cooling structure of a plasma writing apparatus according to a fifth embodiment of the present invention;

FIG. 9 is a cross-sectional view of the case taken along the line C-C in FIG. 8; FIG.

10 is a cross-sectional view of a case according to a sixth embodiment of the present invention.

Best Mode for Implementation of the Invention

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the cooling structure of the plasma lighting apparatus according to the present invention.

2 is a longitudinal sectional view showing a cooling structure of the plasma lighting apparatus according to the first embodiment of the present invention.

Referring to FIG. 2, the case 50 includes a magnetron 61 for generating microwaves as a kind of microwave generator, a waveguide 63 for transmitting microwaves output from the magnetron 61, and a waveguide 63. A high voltage generator (65) providing high voltage power to the magnetron (61) and a bulb motor (66) capable of cooling while rotating the bulb (68) are provided.

Here, the waveguide 63 is located at the inner center of the case 50, and the magnetron 61 and the high voltage generator 65 are located at both sides of the waveguide 63, respectively. At the rear is the bulb motor 66.

In front of the case 50, a light bulb 68 for generating light by the microwave, a mesh screen 70 for blocking microwaves and passing light, and generated in the light bulb 68 A reflector 72 is provided to reflect the light to the front.

A blowing unit 80 is provided at a rear portion of the case 50 to cool the heat generating parts such as the magnetron 61, the high voltage generator 65, and the bulb motor 66.

The blower device 80 includes a fan housing 81 that serves as a passage through which external air flows into the case 50, a fan 83 provided inside the fan housing 81, and It consists of a fan motor 85 which drives the fan 83 to rotate.

The fan housing 81 has a suction port 81a formed at the front center thereof, and the fan 83 is positioned inside the suction port 81a. In particular, the fan housing 81 has a first discharge port 81b and a second discharge port 81c so as to discharge air toward the magnetron 61 and the high voltage generator 65, respectively.

Here, the magnetron 61 generates a relatively high heat than the high voltage generator 65, the first to provide a greater discharge air flow to the side where the magnetron 61 and the bulb motor 66 is located. The cross-sectional area S1 of the discharge port 81b is larger than the cross-sectional area S2 of the second discharge port 81c.

For reference, the cross-sectional area ratio of the first discharge port 81b and the second discharge port 81c may be about 6: 4.

In this way, the first and second discharge ports 81b and 81c of the fan housing 81 extend the ducts 90 and 91 for guiding discharged air toward heating elements such as the magnetron 61 and the high voltage generator 65. Are each extended.

Among the extension ducts 90 and 91, the extension duct 90 connected from the first discharge port 81b toward the magnetron 61 may be configured to centrally cool the magnetron 61 and the bulb motor 66. It consists of the distribution duct 95 which has the 1st discharge port 96a and the 2nd discharge port 97a.

In order to further cool the magnetron 61, the first motor outlet 96a for intensively discharging air to the magnetron 61 of the outlets 96a and 97a of the distribution duct 95 may include the bulb motor. It is formed larger than the second discharge port 97a for intensively discharging air to 66.

That is, the distribution duct 95 is divided into the main pipe 96 having the first discharge port (96a), and the branch pipe (97) having a second discharge port (97a) in the main pipe 96 so that the discharge flow rate is relatively large )

On the other hand, the case 50 is formed on the front surface of the case discharge port 50a for discharging the air cooling the heat generating parts such as magnetron 61, the case discharge port 50a is discharged air in the lateral direction of the case 50 The discharge guide plate 55 is formed to be round to guide the.

On the other hand, the fan 83 provided in the fan housing 80 can be selected and installed according to the design conditions, such as a sirocco fan, an axial fan. In addition, in the present exemplary embodiment, the extension ducts 90 and 91 are integrally formed in the fan housing 80, but may be configured in a separated structure as necessary.

In addition, the number and direction of the discharge ports 81b and 81c of the fan housing 81, the extension ducts 90 and 91, and the distribution duct 95 may be different depending on the positions of the heat generating parts disposed in the case 50. Can be.

Referring to the operation of the cooling structure of the plasma writing apparatus of the first embodiment according to the present invention configured as described above are as follows.

When the high pressure boosted from the high voltage generator 65 is supplied to the magnetron 61, the magnetron 61 generates microwaves and radiates into the mesh screen 70 through the waveguide 63, and the bulb 68 is applied to the magnetron 61. The encapsulated material within is discharged by the microwave to generate light to illuminate the illumination space.

And, together with the high voltage generator 65, the bulb motor 66 and the fan motor 85 are also operated at the same time, the bulb motor 66 is cooled while rotating the bulb 68, the fan motor ( The fan 85 flows air outside the case 50 into the case 50 while rotating the fan 83 to generate heat such as the magnetron 61, the high voltage generator 65, the bulb motor 66, the fan motor 85, and the like. Cool the parts.

On the other hand, as the fan 83 is driven, the outside air introduced through the inlet 81a of the fan housing 81 passes through each of the extension ducts 90, through the first outlet 81b and the second outlet 81c. 95, the magnetron 61, the bulb motor 66, and the high voltage generator 65 are concentratedly cooled.

Here, since the first discharge port 81b has a larger cross-sectional area than the second discharge port 81c, more external air is provided to the distribution duct 95 toward the magnetron 61 and the bulb motor 66, in particular. The distribution duct 95 is divided into two outlets 96a and 97a so that the outside air is concentratedly supplied to the magnetron 61 and the bulb motor 66.

Thus, the heating element inside the case 50 is formed by providing more external air to the magnetron 61 that generates relatively high heat and at the same time distributing the structure to concentrate on a specific part such as the magnetron 61 and the bulb motor 66. Can be more effectively concentrated cooling.

Therefore, the present invention is formed to provide more external air to the overheated heat generating component or the side where the heat generating component is relatively located, thereby effectively cooling, thereby increasing the durability life of the components and increasing the reliability of the device.

The air cooling the internal parts of the case 50 as described above is discharged to the outside through the case discharge port 50a formed on the front surface of the case 50. At this time, the discharge air is discharged toward the outer side of the case 50 by the discharge guide plate 55 provided in front of the case discharge port 50a.

In the following description of other embodiments, the same reference numerals are given to the same or similar components as those of the above-described first embodiment, and description thereof will be omitted.

3 is a longitudinal sectional view showing a cooling structure of the plasma lighting apparatus according to the second embodiment of the present invention, Figure 4 is a cross-sectional view of the case in the direction of the line A-A of FIG.

While the above-described first embodiment is configured to discharge air toward the front of the case, the second embodiment of the present invention is configured to discharge air to the rear of the case 50.

That is, the case 50 of the second embodiment has a double-cylindrical structure consisting of an inner case 51 and an outer case 52, and a discharge flow passage communicating with the outer case 52 in front of the inner case 51. 50b is formed, and a discharge port 52a through which air is discharged to the outside is formed on the rear surface of the outer case 52.

Therefore, the outside air introduced into the inner case 51 by the fan housing 83 cools the heat generating parts such as the magnetron 61 in the inner case 51, and then discharges the discharge flow path 50b of the inner case 51. After flowing into the outer case 50 through, and exits to the outside through the rear outlet 52a of the outer case 50.

On the other hand, it is preferable that an insect screen or the like is installed in the outlet 52a of the outer case 52 so that foreign substances such as insects do not enter.

The second embodiment of the present invention can improve the user's convenience by discharging the cooling air to the rear of the case 50, and at the same time having a discharge passage made of the outer case 52, a smooth air discharge structure without passage resistance Can be secured.

FIG. 5 is a longitudinal cross-sectional view illustrating a cooling structure of a plasma lighting apparatus according to a third exemplary embodiment of the present invention, and FIG. 6 is a cross-sectional view of a case in the B-B line direction of FIG. 5.

In the above-described second embodiment, the double case structure is configured to discharge the exhaust air to the back of the case, but in the third embodiment of the present invention, the outlet is long connected to the outer surface of the case 50 in the front-rear direction. It is configured to exhaust air to the back of the case 50 through the duct 56.

That is, two discharge ducts 56 are provided at both sides of the case 50, and are connected in a long direction in the front and rear direction of the case 50 so that the air passing through the case 50 is moved backward through the outlet of the duct. Will be discharged.

In addition, the case 50 has a first discharge port 50b communicating with the front portion of the discharge duct 56, and further, a second discharge port 50c communicating with an intermediate portion of the discharge duct 56. Is formed.

Wherein the first outlet 50b of the case 50 is formed in a fully open structure, while the second outlet 50c is a grill structure consisting of a plurality of holes opened by cutting a portion of the case 50 and then bent. Is formed. At this time, the discharge direction of the second discharge port 50c of the case 50 is preferably formed to improve the discharge port 56a side of the discharge duct 56.

The cooling structure of the plasma lighting apparatus according to the third exemplary embodiment of the present invention simplifies the configuration of the case 50 while minimizing the flow path resistance through the first and second outlets 50b and 50c of the case 50. In the state, the air passing through the case 50 can be easily discharged to the outside.

7 is a cross-sectional view of a case according to a fourth embodiment of the present invention.

The fourth embodiment according to the present invention is the same as the configuration of the third embodiment described above, except that an additional discharge port 56b is formed on the side of the discharge duct 56 to discharge air to the outside.

The additional outlet 56b may also have a grille structure similar to the second outlet 50c of the case 50 in the above-described third embodiment.

In the fourth embodiment of the present invention, it is possible to discharge the air more easily by enlarging the discharge passage of the discharge duct 56 to minimize the passage resistance.

8 is a longitudinal cross-sectional view illustrating a cooling structure of a plasma lighting apparatus according to a fifth exemplary embodiment of the present invention, and FIG. 9 is a cross-sectional view of a case in the C-C line direction of FIG. 8.

The fifth embodiment of the present invention is configured to discharge the air to the rear of the case 50 through the discharge duct 56 long connected to the outer side of the case 50 in the front and rear direction similar to the configuration of the third embodiment described above. do.

However, the heat dissipation fins 58 protruding from the outer surface of the case 50 are provided in the discharge duct 56. The heat dissipation fins 58 may be elongated in the direction of the flow path of the discharge air or elongated in the direction orthogonal to the direction of the flow path of the discharge air. The shape and arrangement of the heat dissipation fins 58 may be variously formed according to design conditions or needs.

In the fifth embodiment of the present invention as described above, a part of the heat generated in the case 50 is transmitted through the heat dissipation fin 58, and the air discharged through the discharge duct 56 contacts the heat dissipation fin 58. The contact area with air is enlarged, which increases the cooling efficiency of the overall system.

10 is a cross-sectional view of a case according to a sixth embodiment of the present invention.

In the third, fourth, and fifth embodiments described above, two discharge ducts 56 are formed on the outer surface of the case 50, whereas in the sixth embodiment of the present invention, the discharge is discharged to the outer surface of the case 50. Four ducts 56 are formed.

The discharge ducts 56 are regularly positioned on the circumferential surface of the case 50 at regular intervals, but in the present embodiment, four discharge ducts 56 are configured, but the number of the discharge ducts 56 is not limited thereto. have.

In particular, a plurality of heat dissipation fins 59 are formed on an outer side surface of the case 50 so as to easily dissipate heat inside the case 50, and the discharge duct 56 is not formed. It is preferably formed on the outer side.

In the sixth embodiment of the present invention configured as described above, four discharge ducts 56 may reduce discharge resistance of air, and a plurality of heat dissipation fins 59 may be formed on the outer surface of the case 50 to increase cooling efficiency. Will be.

[Technical Challenges]

 The present invention has been made to solve the above-mentioned problems of the prior art, by varying the discharge flow rate according to the heat generation degree or design conditions of the internal components to effectively concentrate cooling high-heat generating parts such as magnetron without unnecessary fan capacity expansion Its purpose is to provide a cooling structure of a plasma lighting device that allows components to extend their life and improve the performance of the system.

[Technical Solution]

The cooling structure of the plasma lighting apparatus according to the present invention for achieving the above object, has at least two or more discharge ports to allow the external air to flow into the case to cool the heat generating components in the case, the discharge ports are discharged from each other It is characterized by including a fan housing, made to be different.

The discharge port of the fan housing is provided with extension ducts for guiding the discharge air toward each of the heat generating parts.

The extension duct of at least one of the extension ducts is composed of distribution ducts having two or more outlets so as to centrally cool two or more specific parts of the heating parts.

According to an embodiment of the present invention, the case is located in the fan housing so that the outside air is introduced into the rear of the case, the front side is formed with a case outlet for discharging the air cooling the heating component, the case outlet is to be round The discharge guide formed is formed.

According to another embodiment of the present invention, the case has a double cylindrical structure consisting of an inner case and an outer case,

The outside air flowing by the fan housing flows into the rear side of the inner case, passes through the inner case, flows into the outer case, and then exits to the rear outlet of the outer case.

According to another embodiment of the present invention, the outer surface of the case is provided with a plurality of discharge ducts connected in the longitudinal direction of the case to discharge the air passing through the case to the rear.

Here, the case has a first outlet communicated to the front portion of the discharge duct, and further has a second outlet communicated to the middle portion of the discharge duct.

According to another embodiment of the present invention, the discharge duct has a first outlet in the rear portion, and has a second outlet in the side.

According to another embodiment of the present invention, the case has a plurality of heat dissipation fins protruding into the discharge duct.

According to another embodiment of the present invention, a plurality of heat radiation fins are formed on the outer surface of the case.

[Favorable effect]

As described above, the cooling structure of the plasma lighting apparatus according to the present invention can efficiently cool high heat generating parts such as magnetrons without expanding the fan capacity, thereby extending the life of the heat generating parts and improving the overall performance of the system.

In addition, it is possible to increase the ease of use without creating a discomfort to the user.

As described above, since the cooling structure of the plasma lighting apparatus according to the present invention is configured by setting the discharge flow rate differently according to the heat generation degree or design conditions of the internal parts, the heat generating parts are efficiently cooled by intensive cooling of high heat generating parts such as magnetrons without expanding the fan capacity. This life can be extended and the overall performance of the system can be improved.

In addition, since the air cooled in the heat generating parts in the case can be discharged to the back of the case, hot air is not discharged into the lighting space, thereby increasing convenience of use without creating discomfort to the user.

Claims (24)

Cooling structure of the plasma lighting apparatus, characterized in that it has at least two or more discharge ports to allow the outside air to flow into the case to cool the heat generating parts in the case, the discharge holes include a fan housing configured to be different discharge flow rate. The method of claim 1, Cooling structure of the plasma lighting apparatus, characterized in that the discharge port of the fan housing is provided with extension ducts for guiding the discharge air toward each of the heat generating parts. The method of claim 2, At least one of the extension ducts of the cooling structure of the plasma lighting apparatus, characterized in that consisting of a distribution duct consisting of two or more outlets so as to centrally cool two or more specific parts of the heat generating components, respectively. . The method of claim 3, wherein Cooling structure of the plasma lighting apparatus, characterized in that the discharge flow rate of the discharge port of the fan housing is formed such that the discharge flow rate of the side connected to the distribution duct is relatively larger. The method of claim 3, wherein Cooling structure of the plasma lighting apparatus, characterized in that the outlet of the distribution duct is formed so that the discharge flow rate is different from each other. The method of claim 1, When the microwave generator and the bulb motor is located on one side and the high pressure generator is located on the other side in the case, And the discharge ports of the fan housing are configured such that the discharge flow rate of the discharge port toward the side where the microwave generator and the bulb motor is located is greater than the discharge flow rate of the discharge port toward the side where the high pressure generator is located. The method of claim 6, Cooling structure of the plasma lighting apparatus, characterized in that the discharge port is directed toward the position where the microwave generator and the bulb motor is located, the distribution duct consisting of two discharge ports so as to concentrate the cooling of the microwave generator and the bulb motor, respectively. The method of claim 1, The case has a cooling structure of the plasma lighting apparatus, characterized in that the fan housing is positioned so that the outside air flows into the rear of the case, and a case discharge port through which the air cooling the heat generating parts is discharged. The method of claim 8, Cooling structure of the plasma lighting apparatus, characterized in that the discharge outlet is formed in the case discharge port rounded. The method of claim 1,  The case has a double cylindrical structure consisting of an inner case and an outer case, The external air flowing by the fan housing flows into the rear of the inner case, flows through the inner case to the inside of the outer case, and then exits to the rear outlet of the outer case. Cooling structure of the device. The method of claim 1, Cooling structure of the plasma lighting apparatus, characterized in that the outer surface of the case is provided with a plurality of discharge ducts are connected in the longitudinal direction of the case to discharge the air passing through the case to the rear. The method of claim 11, The case has a cooling structure of the plasma lighting apparatus, characterized in that it has a first outlet port communicated with the front portion of the discharge duct. The method of claim 12, And the case further has a second outlet communicating with an intermediate portion of the discharge duct. The method of claim 11, The exhaust duct has a first outlet at the rear and a second outlet at the side. The method of claim 11, The case has a cooling structure of the plasma lighting apparatus, characterized in that it has a plurality of heat dissipation fins protruding into the discharge duct. The method of claim 11, Cooling structure of the plasma lighting apparatus, characterized in that a plurality of heat radiation fins are formed on the outer surface of the case. A fan housing which is a passage through which external air flows into the case so as to cool the heat generating parts in the case and has at least two discharge ports; And a distribution duct connected to one outlet of the fan housing and having a plurality of outlets so as to centrally cool two or more of the heat generating parts, respectively. The method of claim 17, The distribution duct is a cooling structure of the plasma lighting apparatus, characterized in that the main pipe having a relatively large discharge flow rate, and the branch pipe divided in the main pipe. The method of claim 18, The case is provided with a microwave generator and a bulb motor located in the vicinity of the microwave generator to rotate the bulb, The main pipe is formed to face the microwave generator, the branch pipe is cooling structure of the plasma lighting apparatus, characterized in that formed to face the electric motor. A case in which various parts are built; A plurality of discharge ducts connected to the front and rear directions of the case at an outer side of the case to discharge air passing through the case to the rear; The case has a cooling structure of the plasma lighting apparatus, characterized in that the case has a first discharge port communicated to the front portion of the discharge duct, and the case has a second discharge port communicated to the middle portion of the discharge duct. The method of claim 20, The discharge duct has a first discharge port on the back side, the cooling structure of the plasma lighting apparatus, characterized in that it has a second discharge port on one side. A case in which various parts are built; A plurality of discharge ducts connected to the front and rear directions of the case at an outer side of the case to discharge air passing through the case to the rear; The case has a cooling structure of the plasma lighting apparatus, characterized in that it has a plurality of heat dissipation fins protruding into the discharge duct. A case in which various parts are built; A plurality of discharge ducts connected to the front and rear directions of the case at an outer side of the case to discharge air passing through the case to the rear; Cooling structure of the plasma writing device, characterized in that it comprises a heat radiation fin formed on the outer surface of the case to dissipate heat inside the case. The method of claim 23, The discharge ducts are uniformly arranged at regular intervals on the outer circumferential surface of the case, and the heat dissipation fins are formed in a portion where the discharge duct is not formed.